C18O cores in Orion A

We have performed an unbiased dense core survey toward the Orion A Giant Molecular Cloud in the C^18^O (J=1-0) emission line taken with the Nobeyama Radio Observatory (NRO) 45 m telescope. The effective angular resolution of the map is 26", which corresponds to ~0.05pc at a distance of 414pc. By using the Herschel-Planck H_2_ column density map, we calculate the C^18^O fractional abundance and find that it is roughly constant over the column density range of ~0.44M_{sun}_). We also found that the ratio of each core mass to the total mass integrated along the line of sight is significantly large. Therefore, in the previous studies, the core masses derived from the dust image are likely to be overestimated by at least a factor of a few. Accordingly, such previous studies may underestimate the star formation efficiency of individual cores.

Cone search capability for table J/PASJ/73/487/table3 (Properties of identified cores)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/PASJ/73/487
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASJ/73/487
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASJ/73/487
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/PASJ/73/487
Provenance
Creator Takemura H.; Nakamura F.; Ishii S.; Shimajiri Y.; Sanhueza P.; Tsukagoshi T.; Kawabe R.; Hirota T.; Kataoka A.
Publisher CDS
Publication Year 2021
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Service
Discipline Astrophysics and Astronomy; Interstellar medium; Natural Sciences; Physics